HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$265+ Cheap flights from Chicago (CHI) to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LHR
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago to Heathrow with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Chicago to London Heathrow are usually found in January or February, booked 56 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Chicago to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$585
(lastminute.com)

One-way from

$269
(Expedia)

Popular in

June

Cheapest in

January

Average price

$671

Good round-trip deal

$659 or less

Good one-way deal

$457 or less
Provider with most accurate pricing for Chicago (CHI)-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-London Heathrow flights.
Search Deals
From Chicago (CHI) to London Heathrow
Search Deals
One-way flight from Chicago (CHI) to London Heathrow
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($208 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to London Heathrow.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to London Heathrow.
Search Deals

Find flight deals from Chicago to Heathrow

Cheapest flights from Chicago to Heathrow
Explore the most affordable flight options available from Chicago to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 20, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/168:40 pmORD - LHR
2 stops17h 10mScandinavian Airlines
dom. 3/239:05 pmLHR - ORD
2 stops26h 45mScandinavian Airlines
Deal found 2/20$585
This Booking.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/14:55 pmORD - LHR
Nonstop7h 55mFinnair
mié. 4/2310:20 amLHR - ORD
1 stop13h 30mFinnair
Deal found 2/20$586
This Cheapflightsfares deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/99:15 pmORD - LHR
Nonstop7h 45mIberia
mié. 3/1911:00 amLHR - ORD
Nonstop8h 55mIberia
Deal found 2/19$587
This oojo deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/247:30 pmORD - LHR
1 stop18h 50mIcelandair
mié. 4/301:05 pmLHR - ORD
1 stop14h 10mIcelandair
Deal found 2/20$589
This Expedia deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/47:40 pmORD - LHR
1 stop9h 45mAer Lingus
mié. 3/1212:10 pmLHR - ORD
1 stop11h 45mAer Lingus
Deal found 2/19$593
This Ticket deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/910:25 amORD - LHR
1 stop15h 25mVirgin Atlantic
mar. 3/189:00 amLHR - ORD
1 stop12h 05mVirgin Atlantic
Deal found 2/19$605
This TAP AIR PORTUGAL deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/197:15 pmORD - LHR
1 stop14h 15mTAP AIR PORTUGAL
mar. 3/186:30 pmLHR - ORD
1 stop27h 00mTAP AIR PORTUGAL
Deal found 2/19$607
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/69:20 pmORD - LHR
Nonstop8h 25mUnited Airlines
dom. 4/138:45 amLHR - ORD
1 stop33h 25mUnited Airlines
Deal found 2/20$616
This Gotogate deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/137:20 amORD - LHR
2 stops18h 10mMultiple Airlines
mar. 3/188:55 amLHR - ORD
1 stop13h 20mMultiple Airlines
Deal found 2/20$617
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/52:00 pmORD - LHR
1 stop14h 30mDelta
lun. 3/106:30 amLHR - ORD
1 stop14h 00mDelta
Deal found 2/19$622
This Bravofly deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/37:09 pmMDW - LHR
1 stop12h 01mVirgin Atlantic
jue. 4/2411:20 amLHR - MDW
1 stop12h 39mVirgin Atlantic
Deal found 2/20$622
This World Air Fares deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/12:55 pmMDW - LHR
1 stop12h 00mAir France
mar. 4/83:15 pmLHR - MDW
1 stop13h 06mAir France
Deal found 2/20$627

Find flights from Chicago to Heathrow within your budget

Customize your flight search to find flights from Chicago to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 20, 2025.

Fly from

Chicago

Fly to

Heathrow

Route

Depart

Return

Price

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 4/1

3:45 pm-8:00 am

1 stop10h 15m

London Heathrow

mar. 4/8

8:50 am-2:00 pm

1 stop11h 10m

$585

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 3/9

7:30 pm-8:15 am

Nonstop7h 45m

London Heathrow

mié. 3/19

11:00 am-2:55 pm

Nonstop8h 55m

$587

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 4/1

7:30 pm-8:20 pm

1 stop18h 50m

London Heathrow

mié. 4/23

9:25 pm-6:20 pm

1 stop26h 55m

$588

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 4/1

10:30 pm-12:15 pm

Nonstop7h 45m

London Heathrow

mié. 4/23

7:30 am-5:50 pm

1 stop16h 20m

$595

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

mar. 4/1

7:15 pm-5:40 pm

1 stop16h 25m

London Heathrow

mié. 4/23

9:05 pm-4:10 pm

2 stops25h 05m

$599

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 3/9

10:25 am-6:50 am

1 stop15h 25m

London Heathrow

mar. 3/18

9:00 am-4:05 pm

1 stop12h 05m

$605

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

sáb. 3/8

3:40 pm-10:10 am

1 stop36h 30m

London Heathrow

lun. 3/17

1:45 pm-5:15 pm

1 stop32h 30m

$606

ChicagoLondon

ORD - LHR

ORDLHR

Chicago O'Hare Intl

dom. 3/9

9:25 pm-9:35 pm

1 stop19h 10m

London Heathrow

mar. 3/18

6:30 pm-4:30 pm

1 stop27h 00m

$607

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

jue. 4/3

7:09 pm-1:10 pm

1 stop12h 01m

London Heathrow

jue. 4/24

11:20 am-5:59 pm

1 stop12h 39m

$622

ChicagoLondon

MDW - LHR

MDWLHR

Chicago Midway

mar. 4/1

2:55 pm-8:55 am

1 stop12h 00m

London Heathrow

mar. 4/8

3:15 pm-10:21 pm

1 stop13h 06m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 36 results
1
2
3
4

Compare providers for flights from Chicago to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Heathrow in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
FlightsMojoPrice Accuracy-Trust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Chicago to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Chicago to Heathrow

Get recent, data-driven insights about flights from Chicago to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to London Heathrow Airport?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Heathrow. Price data was last updated on February 14, 2025.

To ensure you get the cheapest price possible for a flight from Chicago to London Heathrow Airport, you should look to book at least 56 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Chicago to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Chicago to London Heathrow Airport (average of $661). Flying from Chicago to London Heathrow Airport in June is currently the most expensive (average of $1,136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to LHR?

Find hourly flight availability from Chicago to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 20, 2025.

When flying from Chicago to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 14% versus a flight in the evening.

What is the cheapest day to fly from Chicago to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago to London Heathrow Airport flight should consider departing on Tuesday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Chicago to London Heathrow Airport

Explore weekly flight availability from Chicago to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated febrero 20, 2025.

The most flights from CHI to LHR are scheduled on a Wednesday (38 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated febrero 20, 2025.
Get a feel of what it's like to fly with Delta, Alaska Airlines and KLM from Chicago to London by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Alaska Airlines
8.0
Very good
9,692 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Chicago to London Heathrow Airport round-trip?

    Our cheapest airline available from Chicago to London Heathrow Airport is Aer Lingus. Our recent data shows that you can find tickets from as low as $585 on this airline. Additional options worth looking into are Finnair and Iberia, starting at $586 and $587 round-trip. You may be able to fly from Chicago to London Heathrow Airport for 26% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Chicago to London Heathrow Airport one-way?

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $269. Icelandair flights start at $296 while deals on WestJet start at $351 one-way.

  • What are the most reliable airlines from Chicago to London Heathrow Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to London Heathrow Airport on time: Aer Lingus (80%), Air Canada (74%), Austrian Airlines (74%).

  • What are the cheapest flights from Chicago to London Heathrow Airport?

    On average you can expect to pay $1,383 for a flight from Chicago to London Heathrow Airport. The cheapest flight overall is $393 while the most popular route, (Chicago O'Hare Intl - London Heathrow) is currently priced at $505.

  • Where are the most common layover locations when flying from Chicago to London Heathrow Airport?

    Chicago to London Heathrow Airport flights have a layover in Reykjavik most often. Reykjavik is followed by Dublin in terms of the most popular layover location on flights from Chicago to London Heathrow Airport.

  • What are some popular things to do or see while on a layover in Reykjavik?

    Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are currently the most popular points of interest in Reykjavik at the moment. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Travelers in need of a car in Reykjavik can rent one for about $54 per day.

  • What are some popular points of interest to see during a layover in Dublin?

    Dublin travelers tend to visit Molly Malone Statue, St. Patrick's Cathedral, and Parnell Square more than any other notable places. Molly Malone Statue, St. Patrick's Cathedral and Parnell Square are located about 5.8 mi, 6.1 mi, and 5.0 mi, respectively from Dublin if you are interested in checking them out. Those looking to explore during their layover in Dublin can rent a car from Dublin for about $20 per day.

  • Where are the least popular layover locations for Chicago to London Heathrow Airport flights?

    Chicago to London Heathrow Airport flights that have layovers will least frequently stop in Copenhagen.

  • Can I find deals for flights from Chicago to Heathrow that include hotel bookings?

    Yes. In addition to deals on Chicago to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Heathrow.

  • Can I find deals for business class flights from Chicago to Heathrow?

    Yes. Cheapflights offers flight deals from Chicago to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Chicago to London Heathrow Airport (average of $661). Flying from Chicago to London Heathrow Airport in June is currently the most expensive (average of $1,136). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Harrow
Luton
Wembley
Horley
Canterbury
Northampton
Gatwick
Milton Keynes
Dover
Orpington
Watford
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Chicago to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Heathrow flights
O'Hare Intl to Gatwick flights
O'Hare Intl to London City flights
Midway to Heathrow flights
St. Louis to Heathrow flights
O'Hare Intl to Stansted flights
O'Hare Intl to Luton flights
St. Louis to Gatwick flights
St. Louis to London City flights
Midway to Gatwick flights
Peoria to Heathrow flights
Evansville to Heathrow flights
St. Louis to Luton flights
St. Louis to Stansted flights
Moline to Heathrow flights
Champaign to Heathrow flights
Midway to London City flights
Peoria to Gatwick flights
Springfield to Heathrow flights
Evansville to Gatwick flights
Bloomington to Heathrow flights
Midway to Luton flights
Midway to Stansted flights
Peoria to London City flights
Moline to Gatwick flights
Dubuque to Heathrow flights
Bloomington to Gatwick flights

Top 10 airlines flying from Chicago to Heathrow

Discover the top 10 airlines that operate flights from Chicago to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$381Average$576FlexibilityNo cancel feeOn-time77%
DeltaCheapest$451Average$882FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$464Average$592FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$506Average$812FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$516Average$679FlexibilityNo cancel feeOn-time62%
LufthansaCheapest$550Average$920FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$554Average$749FlexibilityNo cancel feeOn-time67%
FinnairCheapest$566Average$748FlexibilityNo cancel feeOn-time76%
SWISSCheapest$581Average$896FlexibilityNo cancel feeOn-time79%
IberiaCheapest$582Average$729FlexibilityNo cancel feeOn-time77%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.